一堂成功的数学课,必须有一个精心设计的课堂导入,恰当的导入有利于营造良好的教学情境,集中学生的注意力,激发学生的学习兴趣,启迪学生的积极思维,唤起学生的求知欲,为后续的教学过程奠定基础。一、旧知导入旧知是相对新的知识而言,旧知导入主要是利用新知与旧知之间的逻辑联系,即新 A successful math class, must have a well-designed classroom into the appropriate introduction will help create a good teaching situation, focus the attention of students, stimulate students interest in learning, inspire students ’positive thinking, arouse students’ curiosity, Lay the foundation for the follow-up teaching process. First, the old knowledge into the old knowledge is relatively new knowledge, the old knowledge into the main use of new knowledge and the old knowledge of the logical link between the new